Problems from The 2020 ICPC Vietnam National Contest

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Astrological Sign	1752	776	44%	0.00	713	639	90%	1.9
Battle of Hogwarts	674	161	24%	0.06	147	117	80%	6.1
Cable Car	311	58	19%	0.00	88	50	57%	8.1
Dividing Kingdom	329	78	24%	0.29	78	59	76%	6.6
Easy Arithmetic	215	64	30%	0.08	63	49	78%	6.6
Fluffy Cat	133	22	17%	0.01	29	15	52%	7.3
Greatest Pair	626	94	15%	0.66	77	55	71%	7.4
Highway to Mount Fansipan	667	211	32%	0.01	132	117	89%	3.5
Infinite 2D Array	551	194	35%	0.05	133	113	85%	5.2
Just Enough Water	439	163	37%	0.00	126	112	89%	4.3
Kingdom of Cats	614	184	30%	0.00	146	120	82%	4.4
Looping Around	236	50	21%	0.47	55	38	69%	7.0
Malfunctioning Robot	1070	333	31%	0.00	286	231	81%	2.7